n=int(input(""))
if(n>=400 and n<=599):
        print("8")
elif(n>=600 and n<=799):
        print("7")
       
elif(n>=800 and n<=999):
        print("6")
       
elif(n>=1000 and n<=1199):
        print("5")
        
elif(n>=1200 and n<=1399):
        print("4")
       
elif(n>=1400 and n<=1599):
        print("3")
       
elif(n>=1600 and n<=1799):
        print("2")
        
elif(n>=1800 and n<=1999):
        print("1")
        n=int(input("")) n int(input("")) int input("") input "" if(n>=400 and n<=599):
        print("8")
elif(n>=600 and n<=799):
        print("7")
       
elif(n>=800 and n<=999):
        print("6")
       
elif(n>=1000 and n<=1199):
        print("5")
        
elif(n>=1200 and n<=1399):
        print("4")
       
elif(n>=1400 and n<=1599):
        print("3")
       
elif(n>=1600 and n<=1799):
        print("2")
        
elif(n>=1800 and n<=1999):
        print("1")
        n>=400 and n<=599 n>=400 n 400 n<=599 n 599 print("8") print "8" elif(n>=600 and n<=799):
        print("7")
        n>=600 and n<=799 n>=600 n 600 n<=799 n 799 print("7") print "7" elif(n>=800 and n<=999):
        print("6")
        n>=800 and n<=999 n>=800 n 800 n<=999 n 999 print("6") print "6" elif(n>=1000 and n<=1199):
        print("5")
         n>=1000 and n<=1199 n>=1000 n 1000 n<=1199 n 1199 print("5") print "5" elif(n>=1200 and n<=1399):
        print("4")
        n>=1200 and n<=1399 n>=1200 n 1200 n<=1399 n 1399 print("4") print "4" elif(n>=1400 and n<=1599):
        print("3")
        n>=1400 and n<=1599 n>=1400 n 1400 n<=1599 n 1599 print("3") print "3" elif(n>=1600 and n<=1799):
        print("2")
         n>=1600 and n<=1799 n>=1600 n 1600 n<=1799 n 1799 print("2") print "2" elif(n>=1800 and n<=1999):
        print("1")
        n>=1800 and n<=1999 n>=1800 n 1800 n<=1999 n 1999 print("1") print "1" n=int(input("")) int(input("")) n
n=int(input(""))
if(n>=400 and n<=599):
        print("8")
elif(n>=600 and n<=799):
        print("7")
       
elif(n>=800 and n<=999):
        print("6")
       
elif(n>=1000 and n<=1199):
        print("5")
        
elif(n>=1200 and n<=1399):
        print("4")
       
elif(n>=1400 and n<=1599):
        print("3")
       
elif(n>=1600 and n<=1799):
        print("2")
        
elif(n>=1800 and n<=1999):
        print("1")
       